8122001 has 4 divisors (see below), whose sum is σ = 8402100. Its totient is φ = 7841904.

The previous prime is 8121991. The next prime is 8122003. The reversal of 8122001 is 1002218.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5313025 + 2808976 = 2305^2 + 1676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8122001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8122003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140006 + ... + 140063.

It is an arithmetic number, because the mean of its divisors is an integer number (2100525).

Almost surely, 2^8122001 is an apocalyptic number.

It is an amenable number.

8122001 is a deficient number, since it is larger than the sum of its proper divisors (280099).

8122001 is a wasteful number, since it uses less digits than its factorization.

8122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280098.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 8122001 is about 2849.9124547958. The cubic root of 8122001 is about 201.0115502055.

Adding to 8122001 its reverse (1002218), we get a palindrome (9124219).

The spelling of 8122001 in words is "eight million, one hundred twenty-two thousand, one".